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Panic!

Hi, I only use haskell for an asingement so I don't have any clues, but ghc told me to do a bug report: [1 of 1] Compiling Main ( plant.hs, plant.o ) ghc: panic! (the 'impossible' happened)

(GHC version 8.0.2 for x86_64-unknown-linux):

initTc: unsolved constraints

WC {wc_insol =

\[W\] true_a1Gg t_a1Gf\[tau:1\] (CHoleCan: true)
\[W\] false_a1Gj t_a1Gi\[tau:1\] (CHoleCan: false)
\[W\] true_a1Qq t_a1Qp\[tau:1\] (CHoleCan: true)}
Trac metadata
Trac field Value
Version 8.0.2
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
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